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JOURNALS // Teoreticheskaya i Matematicheskaya Fizika // Archive

TMF, 2023 Volume 217, Number 2, Pages 358–377 (Mi tmf10537)

This article is cited in 1 paper

$T\overline T$ deformation of Calogero-Sutherland model via dimensional reduction

D. V. Pavshinkinab

a Steklov Mathematical Institute of Russian Academy of Sciences, Moscow, Russia
b Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia

Abstract: We derive a general expression for the trace of the energy-momentum tensor $T\overline T$-deformed field theories using a dynamical change of coordinates. Then we perform a dimensional reduction of the bilinear $T\overline T$ operator and obtain a new $T\overline T$-like deformation of the quantum mechanics of free nonrelativistic fermions and the interacting Calogero-Sutherland system. The deformation leads to a change in the energy spectrum but does not affect the eigenfunctions. Furthermore, an expression for the deformed classical Lagrangian is obtained. We also study the correspondence between the two-dimensional Yang-Mills theory and the Calogero-Sutherland system in the presence of the deformation.

Keywords: Field Theories in Lower Dimensions, Integrability, Quantum Mechanics.

PACS: 10

Received: 18.05.2023
Revised: 18.05.2023

DOI: 10.4213/tmf10537


 English version:
Theoretical and Mathematical Physics, 2023, 217:2, 1726–1742

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© Steklov Math. Inst. of RAS, 2024